Ear-corn-grinding mill.



No. 766,699. PATENTED AUG. 2, 1904. J. JORGENSEN.

EAR CORN GRINDING MILL.

APPLICATION FILED emu-.13, 1002.

no MODEL. 2 SHEETS-SHEET 1.

M Jaye 7a Jo zyemaaya No. 766,699. PATENTED AUG. 2, 1904.

J. JORGENSEN.

EAR CORN GRINDING MILL.

APPLICATION FILED SSE-P1213, 1902.

no MODEL. 2 SHEETSSHEET 2.

warmom (2073672 cjzzymsam;

Patented August 2, 1904.

PATENT OEEIcE.

J ORGEN JORGENSEN, OF SOUTH OMAHA, NEBRASKA.

EAR-CORN-GRINDING IVIILL- SPECIFICATION forming part of Letters PatentNo. 766,699, dated August 2, 1904.

Application filed September 13,1902. Serial No. 123,282. (No model.)

To all whom it Wuty concern:

Be it known that I. JoReEN J ORGENSEN, a citizen of the United States,residing at South Omaha, in the county of Douglas and State of Nebraska,have invented new and useful Improvements in Ear-Corn-Grinding Mills, ofwhich the following is a specification.

This invention relates to earcorn-grinding mills; and the object thereofis to provide an eflicient, durable, and easily-manipulated mechanismfor grinding corn, and the peculiar manner of accomplishing the desiredresult will be specifically described hereinafter and illustrated in theaccompanying drawings, in WlllCl1- Figure 1 is a side elevation of agrindingmill constructed in accordance with my invention. Fig. 2 is atop plan view of the same. Fig. 3 is a cross-sectional view of the millon the line 3 3 of Fig. 2. Fig. a is a detail view of one of thecorn-removing devices. Fig. 5 is a rear view of one of the grindingburs.Fig. 6 is a transverse sectional view through one of the burs. Fig. 7 isa face view of one of the burs. Fig. 8 is a detail view of a sleeve forsecuring the corn-removing devices in proper relation to each other, andFig. 9'is a detail view of the feed-propeller.

The reference-numeral 1 designates a suitable base-frame supported onstandards or legs 2. The frame is approximately rectangular in plan andsupports a longitudinallyarranged centrally-disposed shaft 3, adjacentone end of which is a pulley 4, from which motion can be imparted to theshaft through the medium of a suitable belt. (Not shown.) Near the otherend of the shaft is secured a collar 5, provided withperipherally-extending flange 6, having an opening therein. This collaris keyed to the shaft by a suitable keying deviceas, for instance, by aset-screw 7. Loosely sleeved on the shaft 3 is an elongated tube 8,provided with a peripheral flange 9, coinciding with and arrangedadjacent the flange 6 on the collar 5. This flange 9 is also providedwith a registering opening designed to be brought in alinement with theopening in the flange 6 and in connection therewith to receive a woodenpin 10, as will be explained hereinafter. The tubular sleeve 8 extends asufficient distance on the shaft 3, and keyed thereon in any suitablemanner are a plurality of shelling-collars, each of which comprises aring 11, on the periphery of which is a plurality of radiating teeth 12.These teeth are arranged in series, and the respective shelling-collarsare arranged so that the teeth will be in alternate alinement, whereby aspiral movement is imparted to the grain after it is torn from the cobsand is conveyed longitudinally of the device to the grinding-burs, to bereferred to hereinafter. Resting on the cross-beams 13 of the frame 1and parallel with the shaft 3 are the concaves 1 and 15. The concave 14is rigid with relation to the remainder of the devices, while theconcave 15 can be adjusted transversely of the machine through themedium of a transverselyarrangedthreaded rod 16, which is suitablysecured in one of the longitudinal beams of the frame and is connectedto the concave 15 in any suitable manner. By turning the handwheel 17 onthe free end of the rod 16 a quick even adjustment can bemade and theconcave 15 will be held rigid with relation to the remaining partsthrough the medium of a rod 18, which passes through the concave andthrough a disk 19, resting against the under side of the cross-beams 13,so that by applying a wrench or other suitable device to the nut 20 thelower edge of the concave 15 will be caused to bind against the top ofthe crossbeams 13 and hold it in proper relative position. Inter-posedbetween the longitudinal edges of the concaves 141 and 15 is a bar 21,the depth of which is less than the thinnest portion of the concave, sothat acentral longitudinal groove or trough is formed to facilitate theconveying of the grain. The concaves 14: and 15 are provided withtransversely-arranged grooves 22, which correspond to the teeth 12 onthe shelling-collars 11. The adjustment of the concave 15 is made whilethe machine is motionless and free from material to be ground.

Arranged above the sheller formed by the construction just described isa hopper 23. (Shown in dotted lines in Figs. 1 and At a point adjacentthe ends of the concaves is arranged a vertically-disposed circulargrindingbur, (designated by the reference-n umeral 24,) which is heldrigid with relation to the frame by means of asemicircular yoke 25, theends of which are secured to the respective longitudinal beams of theframe 1. This bur is provided with a concentric opening 26, which issurrounded by a suitable flange 27, and secured on the shaft 3 inalinement with the openingis a feed propeller or paddle 28. The bur isprovided on its face opposite to the ends of the concaves with a concavegrinding-face 29, which is formed by providing a plurality of slotstransversely through the same and inserting knives in said slots, whichmay be projected therethrough to any desired depth. The slots are closedin the rear by a flat backing-ring. 30, which can be secured to the burby suitable bolts 31. In the event that the knives become worn, broken,or need to be replaced for any cause it will only be necessary to removethe backing-plate 30, and by inserting small strands of wire or stripsof metal in the slots the knives can be projected a sufficient distancethrough the slots in the bur and the backing-plate 30 can be secured inplace. A similar bur 32 is keyed to the shaft 3 and provided with anopposing face opposite to the concave face 29 of the bur 24:. Thislatter bur 32 is longitudinally movable on the shaft '3 by a splinefitting in the restricted portion of the keyhole-slot 33. From the rearof the bur projects a neck or collar 34:, around which is looselysecured a collar 35, carrying oppositely-disposed arms 36 and 37, theextremities of which are internally threaded to receive the threaded endof the rods 38 and 39. By turning the nuts 40 and 41 on the threadedbars 38 and 39 the collar 35 will be moved longitudinally with relationto the shaft, and the adjustable bur 32 will be incidentally movedtoward or away from the stationary bur to regulate the fineness of themeal.

All the parts being assembled and in proper relative position, theoperation will be as follows: After motion has been imparted to theshaft through the medium of the belt and pulley 4 the grain is dumpedinto the hopper 23, from where it is fed into the sheller comprising theconcaves and toothed collars, so that it can be torn from the cob. Inthe event that any obstruction becomes wedged between the concaves andthe teeth the resistance caused thereby will be sufficient to break thepin 10 passing through the two flanges 6 and 9, so that the collar 5will revolve with the shaft, but the sleeve 8 will remain stationarywith relation to the concaves. Thus the operator will immediately benotified to stop the machine andremove the obstructions. As the grain istorn from the cobs it will be moved along the concaves owing to thealternate and the spiral arrangement of the teeth until it is at a pointadjacent the inlet-opening 26 of the stationary bur 24. The propeller orpaddle 28 will then feed it between the opposing faces of the burs,which will have a crushing effect thereon, converting the kernels intomeal of varying degrees of fineness, according to the adjustment of themovable bur 32.

It will thus be seen that I have provided a cheap, durable, andefficient mill for grinding grain, and while I have specificallydescribed what to me at this time appears to be the very best means ofaccomplishing the desired result I would have it understood that Ireserve the right to make such slight changes and alterations as wouldsuggest themselves from time to time without departing from the spiritof this invention or sacrificing any-of the advantages attained thereby.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is

The combination with the shaft having thereon a plurality ofshelling-collars, each: of e which comprises a ring having on itsperiphery a series of radiating spirally-arranged teeth, and toothedconcaves coacting with the teeth, one of which is rigid, the other beingtransversely adjustable, said concaves having transversely-arrangedgrooves corresponding to the configuration of said teeth of saidcollars, of a flanged collar on one' end of the shaftbearing having anopening therein, a flanged tube having an opening registering with theopening in the flanged collar, and abreakable pin mounted in theopenings of the collar and tube, substantially as specified.

In testimony whereof I aifix my signature in presence of two witnesses.

J ORGEN J ORGENSEN.

Witnesses:

SALoM WALKER, L. C. GIBsON.

